Fuel economizer for internal-combustion motors



Nov. 23 1926. O 1,608,018 M. ELDRED FUEL ECONOMIZER FOR INTERNAL COMBUSTION MOTORS Filed March a, 1926 I Hy L alike! a auxiliary combustion mixture comprising heat conducting,

, inafter pointed out and described.

Patented Nov. 23, 1926.

UNITED STATES MELVILLE nnnnnn, or 'cLnvELAxn, oirr'o. I

FUEL nconol nzaa FOB rm'nanaL-eonnus'rxon Morons.

Application filed Inch 5, 1826. Serial m. 92,526;

This invention relates to new and useful improvements in fuel economizers for internal combustion motors providing means for mixing, superheating and supplying through the intake manifold an improved gasoline tank vapor, crankcase oil va Land radiator steam, to combine with an enrich the c0mbustive-qualities of the regular carburetor vaporized gasoline fuel which may be materially reduced thereby effecting -a more efficient and economical consumption of gasoline while increasing the power and efliciency of the motor.

Another object is to provide a device of simple structure without moving parts, requiring no adjustment or attention for operation of the motor, functioning and regulating automatically.

A further object is to provide improved retaining and mixing means for superheating' and mixing the auxiliary combustion mixture. Other objects and features of the invention will be here'- In the drawings 1 Fig. 1 is a side elevation of an. internal combustion automobile motor connected to a radiator and gasoline tank, having the invention applied thereto.

Fig. 2 is a detail plan view of the heating coil.

Fig. 3 is a section on line 33 of Fig. 2. Referring to Fig. 1 of the drawings, 5 indicates an internal-combustion automobile motor having a crankcase 6 with breather or-oil filling tube 7, exhaust manifold 8, intake manifold 9, carburetor 10 connected by supply pipe 11 to a suitably. located gasoline tank 12 provided with screw threaded filling cap 13 vented at 14;. The radiator 15 connect v ed to the. motor water cooling system in'the usual manner has a screw capped filling.

partially extends water.

neck 16 into which overflow pipe 17. I

.Thesuction created by the .motor pistons draws the auxiliary combustion mixture into the intake manifold through tube18 con- .nected thereto by screw threaded elbow 19 the tube 18 forming acoil 20,-to be; hereinafter'described mounted on exhaust manifold 8 .for superheating and mixing the auxiliary mixture, and having the opposite end connected to a four-way cross fitting-21. A- tube 22 branching downwardly from fitting 21 is connected to the breather tube 7 of crankcase 6133 elbow 23. -Atube 24 branching rearwar the liquid level. A tube 26 branching forwardly is' connected at the rear of radiator 15 as at 27 to an L-shaped tube 28. extending up into the filling neck 16- above the water level.

As shown in Figs. 2 and 3'the superheating coil comprises outer coil 29 closely wound about connecting inner coil 30 closely wound about annular heat conductingand retainin tube 31 having an extra thick wall. The coi 20 is adapted to be mounted for heating on the exhaust manifold preferably near the outlet'wherc it is the hottest by means of bolt 32 screw threaded into the manifold as at 33. A washer 35 under bolt head 34 securely retains the tube 20and coils 29 and 30.- The coils 29 and 30 closely wound. on the extra thick tube 31 contacting y from fitting 21is suitably C0117 nected at 25 to the gasoline tank 12 above with the hot exhaust manifold, readily conduct and retain heat therefrom, superheating the auxiliary combustion mixture asit passes through the coils.- The coils and tube permitting easy bending of the tubes for installation.

The suction created by the downward piston strokes of the motor draws the regular vaporized asolinefuel, from carburetor 10 connected connections are preferably of'soft'copper y supplypipe 11 to tank 12,"

through the intake manifold into the comin the usual manner.

The auxiliary combustion mixture is also drawn by the piston suction into the intake manifold, where it mixes and combines with the regular fuel, through tube 18, coil 20 and cross fitting 21 to where the crankcase 011 bustion chambers of the cylinders for firing vapor is drawn through tube 22,,the gasoline tank vapor through tube-24, and radiator steam through tubes 26 and 28, thoroughly mixing and superheating when passing throu'gh'tube 18 and coil 20. I

When desirable in exceptional installation to regulate closely the auxiliary mixture, "a rgulatin valve may be inserted in tube 18.

While have shown and described one embodiment of my invention, obviously various changesin'the details of construction of the parts may be made without departing from thespirit'and scope of the appended claims.

I claim: 1. The combination with the intake manifold of an internal combustion en 'ne, of a pipe provided with a' heating coi leading to said. manifoldg'a fuel supplytenh u mdiator, aerankeesfe; and pipe connections be- 5 tween the-coil and the upper partof the radi ator, the upper part of. the fuel tahkyimd the upper part of thevcrankease.

lhe combination with the intake manifoldiof an internal 'eombustion engine, of

* a pipe provided with a. heating coil, leading theeng-ine. I I. a Y F In testimony whereof, I do aflix my s1g nature.

to s aid manifold, a fuel supply are diator, a crankcase, and-pipe connections betweenthe coil and the upper part .of the 'r-adiator', the upper part of the fuel tank, and

the upper part of the crankcase, the coil" on the exhaust manifoltl'of I being mounted MELVILLE ELDREDSQ 

